It depends what you mean by “not working”. On Ubuntu 12.04, the video of Josh Mandel plays OK, but the thumbnails at the bottom are also all linked to the Josh Mandel video.
You might need to go back to the drawing board on this one. Perhaps set up the gallery first, using a good script, and make sure that works. Then add in the videos.
definitely not a cached copy, it works on all of my and the people i work with ubuntu machines, finally installed win 7 as last night. I am getting a similar error to what you are from firebug atm and assuming that error has something to do with setting the default value in the function update_playlist_visible(clip = ‘’) the clip = ‘’ part of the code but
update_clip_preview() not defined error is the main problem, the function is actually defined on line 877 in the page source
function update_clip_preview(image){
$("#clipimage").attr('src', image);
}